1 files changed, 1 insertions, 0 deletions

diff --git a/npf.c b/npf.c
index c8b456c20..9b81174f8 100644
--- a/npf.c
+++ b/npf.c
@@ -1,5 +1,6 @@
 #include "stdafx.h"
 #include "ttd.h"
+#include "debug.h"
 #include "npf.h"
 #include "aystar.h"
 #include "macros.h"